Viking 1 was the first spacecraft to successfully land on Mars, doing so on July 20, 1976.

Apollo 11 was the first manned mission to land on the Moon, with Neil Armstrong and Buzz Aldrin becoming the first humans to walk on the lunar surface.

Mars is often referred to as the "Red Planet" due to the reddish iron oxide on its surface.

Jupiter is the largest planet in our solar system, with a mass more than twice that of all the other planets combined.

Mariner 2 was the first spacecraft to successfully orbit Venus, doing so in 1962.

Vostok 1 was the first spacecraft to carry a human into orbit, with Soviet cosmonaut Yuri Gagarin becoming the first person to travel into space.

Uranus and Neptune are often referred to as the "Ice Giants" due to their composition of hydrogen, helium, and various ices.

Apollo 11 was the first manned mission to land on the Moon, with Neil Armstrong and Buzz Aldrin becoming the first humans to walk on the lunar surface.

Venus is often referred to as the "Morning Star" and "Evening Star" due to its brightness and visibility in the morning and evening sky.

Apollo 8 was the first manned mission to orbit the Moon, with Frank Borman, James Lovell, and William Anders becoming the first humans to see the far side of the Moon.

Jupiter and Saturn are often referred to as the "Gas Giants" due to their composition of hydrogen and helium.

Curiosity is a rover that landed on Mars in 2012 and is still exploring the planet today.

Saturn is often referred to as the "Ringed Planet" due to its prominent rings made of ice and rock.

Venera 7 was the first spacecraft to successfully land on Venus, doing so in 1970.

Earth is often referred to as the "Water Planet" due to its abundance of liquid water.